Delidded Intel I9-14900KS CT Scan | Hacker News Reader

Delidded Intel I9-14900KS CT Scan

lttlabs.com

124 pointswillx8614 comments

LTT Labs are writing up a lot of nice content of late.

Sadly posts from one of their employees, Lucas, are auto-dead and don't get seen which is sad given their effort and quality.

I wonder why? Genuinely, not sarcastically

Probably because the account has only ever submitted its own content.

https://news.ycombinator.com/submitted?id=LabsLucas

> Please don't use HN primarily for promotion. It's ok to post your own stuff part of the time, but the primary use of the site should be for curiosity.

> https://news.ycombinator.com/newsguidelines.html

potentially overly-aggressive spam filtering? the first comment by that account happens to start off with "The new $39.99 USD Anker Nano 45W(A121D) charger" verbatim.

The author of the linked article is Lucas...

I think he means that, when Lucas sends himself the link to HN, it's autodead. If you click the domain, you see all submissions from LucasLabs are dead.

I have been curious about this, since I posted the delidded i9-14900(really interesting), but it got very little attention. I am a regular user/reader of hackernews, but not sure how they would verify that since I don't comment.

I appreciate you see the effort put into these by not just me but whole team here, I'll have to see if there is a way to get un-muted since these aren't low effort or 'spam-y' self-promotion posts in my opinion.

I was not expecting the CT scan to be able to identify the cores within the die.

But now I think about it, the metal layers (especially traces carrying power) are probably think enough, and different enough to show up. And even just power distribution is enough for the shape of the cores to be visible.

You don't even need a CT to identify the cores; they are already quite obvious in regular die photos as repeated areas.

https://commons.wikimedia.org/wiki/File:Intel_Core_i9-13900K...

You can typically see the L1/L2 SRAM cache regions just by looking for continuous patterns, then try to divide it into the number of cores or core groups you're looking for.

This is only applicable to die photographs of the silicon layer.

For CT scans, which use X-rays, the visible structure is very likely due to the metallic (copper) interconnect, clock- and power-delivery layers, which are generally quite different from the underlying transistors.

These layers are larger-scale, and copper also absorbs X-rays much more strongly than silicon.

Ah, I see. Thank you for the correction.

How neat! Would be cool to see the side by sides of equivalent tier CPU’s throughout the generations

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